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Beautyrest

Beautyrest Black® Hybrid Series Three XCS 14.5" Plush Mattress

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Size: Twin XL

Beautyrest Black Series Three XCS Plush: soft, without the sink

Plush usually asks you to make a trade: a soft surface up top, support somewhere far below it. The Series Three XCS Plush refuses the trade. It runs a 3 out of 10 feel at 14.5 inches, and under the soft hand sits the same Triple-Stranded Pocketed Coil core as the firmest bed in the line. Side sleepers get the deep pressure relief plush exists for, and the spine still gets a floor. If you love a cradling bed but have always woken up hot, this is the line built for you: the coolest, most contouring hybrid Beautyrest makes.

The cooling is the headline

Soft beds tend to sleep hot, because foam you sink into is foam that traps heat. That is where the XCS package earns its keep. A cool-to-the-touch Sleep Climate surface tops the bed, so the first contact is cool. Below it, Micro Diamond Memory Foam carries BlackICE Max, Beautyrest's most aggressive cooling system, with a specific figure worth quoting: 30 percent more cooling power, moving body heat away up to 2 times longer. The surface that feels cool when you lie down keeps pulling heat instead of warming up under you. Cradling and cool at once is a rare pairing, and it is the reason this line exists.

Support, layer by layer

A plush surface is only honest if something underneath holds the line. That job belongs to the Triple-Stranded Pocketed Coil core: each coil is wrapped in its own pocket and twisted from three strands of steel, so the bed supports you point by point rather than as one slab. Your shoulder and hip sink into the deep cushion while the independent coils carry your weight and keep your spine from bowing. The feeling is being held, not swallowed. Between the cooling layer and the coil, a ContourCover comfort system built on FORM HD with AirCool HD and Dynamic Response memory foams conforms closely and transitions you from soft top to firm support. This is softness with a backbone, not the kind that makes a cheap soft bed a chore to climb out of.

Who it fits, and who should look elsewhere

Side sleepers are the headline fit: deep cushion for the shoulder and hip, coils keeping the spine aligned, and the coolest Black hybrid under them. Luxury-plush seekers and back sleepers who like a soft surface but trust the coil to hold the line belong here too. Couples do well on it: the wrapped coils isolate motion so a partner's turn barely crosses the bed, and the dense coil perimeter with foam encasement gives firm edge support. Now the honest part. If you are a heavier sleeper or sleep mostly on your stomach, a 3 out of 10 may let your hips settle too deep. You will sleep better on the Series Three XCS Firm (an 8 out of 10) or the Medium (a 5 out of 10): same cooling, same coils, more support.

Where it sits in the line

Series Three is the cooling-focused foundation of the XCS line. Step up and the higher series add micro-coil contour, not more cooling: the Series Four layers in 2K micro coils for finer surface contour, and the flagship Series Five Plush stacks two layers, 4K micro coils, with enhanced edge support. If you want plush with that contour hardware under it, go feel the Series Five. This bed is the honest entry to the soft side of Black: same coils, same cooling, fewer layers. Compare the whole ladder in the full Beautyrest collection or the Beautyrest Black series comparison. Cross-shopping it against Stearns & Foster? Read the honest comparison. It pairs with adjustable bases, including split-head models for a Split Head Queen or King. The foams are CertiPUR-US certified, and it carries a 10-year limited warranty, honored when you buy from an authorized dealer like Mattress Overstock.

Ten minutes beats ten reviews

Cooling and deep contour are both feels you confirm lying down, not reading specs. The Series Three XCS Plush is on the floor with the rest of the Beautyrest Black line across the five Mattress Overstock Kentucky showrooms (Lexington on Nicholasville Road, Georgetown, Somerset, London, and Richmond), no appointment needed. The 100-night trial holds when you buy from a local authorized dealer, free local delivery is usually next business day on in-stock beds, free setup is included, and the old mattress hauls away free. If the bed is not right, you exchange it for store credit toward one of equal or greater value. Every associate here is paid the same no matter which brand you choose, so the guidance is about how this bed fits you. Select your size to see the live Mattress Overstock price, or lie on it in Lexington this week and let the bed make its case.

Size: Twin XL

What makes this mattress different

BlackICE™ Max Cooling

Beautyrest's most aggressive cooling system: a cool-to-the-touch Sleep Climate surface over Micro Diamond™ Memory Foam, with 30% more cooling power that moves body heat away up to 2X longer.

Triple-Stranded Pocketed Coil®

Each coil is wrapped in its own pocket and twisted from three strands of steel: point-by-point support that keeps a plush top honest, with strong motion isolation.

Plush Feel · 3 out of 10

Tuned to a 3 out of 10, for side sleepers who want to sink into deep cushion without the bed caving at the hips.

Micro Diamond™ Memory Foam

A pressure-relieving comfort foam that carries the BlackICE Max cooling layer and channels heat away from the body.

ContourCover™ Comfort System

FORM HD with AirCool HD and Dynamic Response memory foams that conform closely for flagship pressure relief, then transition you to the coil.

Firm Edge, Low Motion Transfer

A dense pocketed-coil perimeter with foam encasement holds the edge, so the plush does not taper off where you sit or sleep wide.

14.5" Premium Hybrid, Handcrafted

The coolest, most contouring Black hybrid line: the XCS. Adjustable-base friendly, including split-head sizing.

100-Night Trial · 10-Year Warranty

Sleep on it for 100 nights, backed by a 10-year limited warranty, honored when you buy from us as an authorized dealer.

The build

Series Three XCS Plush, layer by layer

The Series Three XCS Plush stacks a cool, deeply cradling comfort system over a responsive coil core:

  • Cool-to-the-touch Sleep Climate surface. The cover starts cool the moment you lie down.
  • Micro Diamond™ Memory Foam with BlackICE™ Max. The cooling, pressure-relieving comfort layer: 30% more cooling power, moving heat away up to 2X longer.
  • ContourCover™ with FORM HD. Close-conforming flagship comfort that contours without restricting movement.
  • AirCool HD + Dynamic Response™ memory foams. High-density comfort and transition foams that bridge the soft top to the coil.
  • Triple-Stranded Pocketed Coil® core. Three strands per wrapped coil for point-by-point support, firm edge, and motion isolation.

14.5", plush (3 out of 10), backed by the 100-night trial and a 10-year limited warranty. (Architecture from Beautyrest's spec; individual layer thicknesses are not all published.)

Inside the build

What's inside Beautyrest Black

Five layers, engineered together: a cool quilted surface, pressure-relieving gel foam, and the Triple-Stranded Pocketed Coil® core that defines the Black line.

Quilted cover + Sleep Climate™Cool-to-the-touch surface Beautyrest® Gel Memory FoamPressure relief Comfort response foamSmooth transition Triple-Stranded Pocketed Coil®Point-by-point support + motion isolation DualCool™ HD baseStable foundation
Who it fits

Built for side sleepers who run hot

Side sleepers, the headline fit: deep cushion for the shoulder and hip, with the coils keeping the spine aligned instead of letting it bow.

Hot sleepers: this is the rare soft bed engineered to sleep cool, with BlackICE Max doing the work foam alone cannot.

Luxury-plush seekers: flagship cushion with a real coil floor underneath, not a soft slab that bottoms out.

Couples: the wrapped coils isolate motion so a partner's turn barely crosses the bed, and the firm perimeter holds the edge.

Back sleepers who like soft: a plush surface with coil support to keep the lower back from sagging.

Heavier or stomach sleepers: be honest with yourself here, a 3 out of 10 may let your hips settle too deep. Try the firm or medium Series Three XCS instead, same cooling, more support.

Specifications

Height14.5"
FeelPlush Hybrid
Firmness3 out of 10 (10 = firmest)
ConstructionSleep Climate Surface + BlackICE Max Cooling + Micro Diamond Memory Foam + AirCool HD Memory Foam + Dynamic Response Memory Foam + FORM HD Material + Triple-Stranded Pocketed Coil
CoolingBlackICE Max Cooling Technology boosts cooling power by 30% and moves body heat away up to 2X longer so you sleep cooler, longer. A cool-to-the-touch Sleep Climate Surface tops the mattress for immediate surface cooling, and Micro Diamond Memory Foam in the comfort layers channels heat away from the body. Together these form the signature XCS cooling system that exceeds the standard Black Hybrid line.
Motion isolationTriple-Stranded Pocketed Coil Technology conforms to and isolates individual movement so partners rest undisturbed, while the dense pocketed-coil perimeter and foam encasement deliver firm edge support. The Plush comfort foams add deep contouring without sacrificing the coil-driven motion separation.
Adjustable baseYes, compatible with adjustable bases, including split-head adjustable bases (Split Head Queen / Split Head King)
CertificationsCertiPUR-US certified foams
Warranty10-year limited warranty
Trial period100 days at Mattress Overstock

Frequently asked questions

How firm is the Series Three XCS Plush?

About a 3 out of 10, a true plush: a deep, soft cushion over a supportive coil core, so you sink into the comfort layers without the bed caving at your hips.

What makes XCS different from the core Beautyrest Black?

XCS is Beautyrest's coolest, most contouring Black hybrid line. It leads with BlackICE™ Max cooling and a layered coil system on the Triple-Stranded Pocketed Coil. If cooling is your priority alongside flagship pressure relief, XCS is the line to feel.

Does it really sleep cool?

Cooling is the XCS headline. A cool-to-the-touch Sleep Climate surface sits over Micro Diamond™ Memory Foam with BlackICE™ Max, Beautyrest's most aggressive cooling system. Beautyrest's figure: 30% more cooling power, moving body heat away up to 2X longer. No mattress is air conditioning, but this is real, testable engineering against heat.

How is Series Three different from the other XCS series?

Series Three is the cooling-focused base XCS on the Triple-Stranded Pocketed Coil. Series Four adds a layer of 2K micro coils for finer contour; the flagship Series Five stacks 4K micro coils (two layers) with enhanced edge support. The higher series add micro-coil contour, not more cooling.

What are the Triple-Stranded Pocketed Coils®?

Beautyrest's signature support: each coil is wrapped in its own pocket and twisted from three strands of steel, so the bed supports point by point and a partner's movement barely crosses it.

I'm a side sleeper who sleeps hot. Is this the one?

This is exactly the bed for that. The 3-out-of-10 plush gives your shoulder and hip room to settle, the coils keep your spine aligned, and BlackICE™ Max keeps the soft surface from turning into a heat trap. It is one of the few beds that does deep cradle and cool sleep at the same time.

How tall is it, and will my sheets fit?

14.5". Deep-pocket sheets (15 inches or deeper) sit best.

Does it work with an adjustable base?

Yes. It pairs with compatible adjustable bases, including split-head models for a Split Head Queen or King, and it works just as well on a sturdy platform, close-slatted base, or solid foundation.

What's the trial and warranty?

A 100-night trial and a 10-year limited manufacturer's warranty, honored when you buy from us as an authorized dealer. If the bed is not right, you exchange it for store credit toward one of equal or greater value.

Can I see it near me?

Yes. It is on the floor across our five Kentucky showrooms (Lexington on Nicholasville Road, Georgetown, Somerset, London, and Richmond), alongside the rest of the Beautyrest Black line. Free local delivery, and the old mattress hauls away free.

Why buy it from Mattress Overstock

Buy it from people you can actually visit

  • Free local delivery To your home across Central & Eastern Kentucky.
  • Free setup We place and set up your new bed in the room.
  • Free old-mattress haul-away The old one goes out the same day the new one comes in.
100-night trial Sleep on it at home
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Walk into any Mattress Overstock location, lie down, and feel the difference yourself. No appointment, no pressure. Our team has over 100 years of combined mattress experience and we're here to help you find the right fit.